Oldham olct 80, User Manual, Page: 4 / 120

Table of Contents iv
Cal CH2 ......................................................................................................... 48
4-20 mA ......................................................................................................... 49
INFOS ............................................................................................................ 50
TEST .............................................................................................................. 51
Chapter 4 | Installation ......................................................... 53
Regulations and operating conditions ........................................................... 53
Pre-installation Hardware Configuration ........................................................ 53
Equipment required ....................................................................................... 54
Positioning the detector ................................................................................. 54
Mounting the detector .................................................................................... 54
Power supply ................................................................................................. 55
Preparing the connection cables ................................................................... 56
Wiring ............................................................................................................. 57
Transfer curve ................................................................................................ 60
Chapter 5 | Wireless Version ............................................... 61
Purpose.......................................................................................................... 61
Concept.......................................................................................................... 61
Components .................................................................................................. 62
Connection ..................................................................................................... 62
Configuration ................................................................................................. 63
Configuring the addresses ............................................................................. 64
Start-up .......................................................................................................... 66
Chapter 6 | Operation ........................................................... 69
Configuring the transmitter ............................................................................ 69
Start-up .......................................................................................................... 70
Gas reading display ....................................................................................... 70
Acknowledging an alarm................................................................................ 71
Zeroing ........................................................................................................... 72
Gas sensitivity test ......................................................................................... 72
Chapter 7 | Pre-installation Hardware Configuration ........ 73
Purpose.......................................................................................................... 73
Access the internal printed circuit board ........................................................ 73
Locate the solder pads .................................................................................. 73
Configuring the auxiliary inputs to connect a 2-wire 4-20mA sensor ............ 74
Configuring the auxiliary inputs to connect a 3-wire 4-20mA sensor ............ 75
Configuring the auxiliary inputs to connect a 4-wire 4-20mA sensor ............ 75
Chapter 8 | Preventative Maintenance .................................. 77
Maintenance frequency ................................................................................. 77
OLCT 80 ........................................................................................................ 77
Chapter 9 | Maintenance ...................................................... 79
Possible transmitter errors ............................................................................. 79
Replacing the sensor cell............................................................................... 80
Cross gas factors for combustible gases ....................................................... 80
Maintaining the remote control ...................................................................... 83
Chapter 10 | Accessories ...................................................... 85